中文摘要：

采用CSR（Center for Space Research）公布的RL05版本的2002-07-2015-04近13年的GRACE卫星月重力数据,计算分析了南极冰盖质量变化趋势。通过比较300km的高斯平滑滤波、扇形滤波以及去条带扇形滤波算法对于去条带噪声的效果,确定去条带扇形滤波算法效果更好。分析对比了Geruo13、IJ05_R2、W12a这3种GIA模型对南极冰盖质量变化的影响,发现不同GIA模型计算的南极冰盖质量变化差异明显,尤其在坎普冰流、龙尼冰架和东南极等区域差别较大。本文分3个时间段反演计算了南极冰盖质量变化,结果显示,不同时间段质量变化存在很大差异,且南极冰盖质量变化呈现非常明显的地区不平衡性,主要体现在西南极、南极半岛、恩德比地、龙尼冰架和毛德皇后地等区域。

英文摘要：

In this paper,GRACE CSR data were used to evaluate the mass balance of the Antarctica ice sheet,as observed from July 2002 to April 2015.First,the optimal filter was chosen from Gaussian,fan,and destriping fan filters;the results show that the destriping fan filter was the most effective for this work.Then,different glacial isostatic adjustment models（Geruo13,IJ05_R2,and W12a）were compared,and we found that important differences existed a-mong them in magnitude and distribution,especially for the Ross Ice Shelf,the Ronne Ice Shelf,and East Antarctica.Finally,the Antarctic ice sheet mass variations during three different periods were inferred from GRACE CSR RL05data;the results indicate apparent regional imbalance.In addition to West Antarctica,the Antarctic Peninsula,and Enderby Land,we found that apparent mass imbalances existed in the Kamb ice stream and in Queen Maud Land.